Is “Peccavi” a Scrabble word?
Yes
PECCAVI
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Peccavi
/pəˈkɑːvi/
noun
1.An act of saying ‘peccavi’; an admission of guilt or responsibility.
interjection
1.An expression of guilt or culpability.
Synonyms: mea culpa